Tennessee Solar Guide 2026

Tennessee offers moderate solar conditions with good sun hours, though TVA's low rates from hydroelectric sources moderate returns.

Updated March 2026 · Sources: TVA, DSIRE, EnergySage, NREL · Research by Dana Mercer
#24 solar state Good sun hours
Avg install cost $2.85/W Before incentives · Q1 2026 · EnergySage
Electricity rate 11¢/kWh Statewide avg · EIA Jan 2026
Peak sun hrs/day 4.5 hrs State avg · NREL data
Typical payback 10-12 yrs After federal ITC
Solar rank #24 Installed capacity · SEIA 2025

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Tennessee provides moderate solar conditions: With 4.5 daily peak sun hours and 11¢/kWh electricity rates from TVA's hydroelectric system, the Volunteer State offers reasonable solar fundamentals. TVA serves much of the state with net metering available.

For Nashville and Memphis residents, solar systems typically pay for themselves in 10-12 years. Good sun exposure helps offset low electricity rates from abundant hydroelectric power.

Tennessee solar incentives (2026)

Incentive Amount Status
Federal ITC 30% of system cost Active
TVA Net Metering Full retail rate Active
Property Tax Exemption Not available None
Sales Tax Exemption Not available None

Tennessee solar install costs (Q1 2026)

System size Gross cost After ITC Annual savings Payback
6 kW $17,100 $11,970 ~$1,120/yr ~10.7 years
8 kW $22,800 $15,960 ~$1,490/yr ~10.7 years

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